@article{25254, keywords = {Resistance, Treatment, Mycobacteria tuberculosis, Mycobacteria leprae}, author = {Lobato LS and Rosa P and Ferreira JS and Neumann AS and Silva MG and Nascimento DC and Soares CT and Pedrini SCB and Oliveira DL and Monteiro CP and Pereira GMB and Ribeiro-Alves M and Hacker MA and Moraes M and Pessolani M and Duarte RS and Lara F}, title = {Statins increase rifampin mycobactericidal effect.}, abstract = {

Mycobacterium leprae and Mycobacterium tuberculosis antimicrobial resistance has been followed with great concern during the last years, while the need for new drugs able to control leprosy and tuberculosis, mainly due to XDR-TB, is pressing. Our group has recently described that M. leprae is able to induce lipid body biogenesis and cholesterol accumulation in macrophages and Schwann cells, facilitating its viability and replication. Considering these previous results, we investigated the efficacy of two statins on the intracellular viability of mycobacteria within the macrophage, and atorvastatin effect on BALB/c mice M. leprae infection. We observed that intracellular mycobacteria viability decreased markedly after incubation with both statins, but atorvastatin showed the best inhibitory effect when combined with rifampin. Using Shepard's model we observed atorvastatin efficacy in control M. leprae and inflammatory infiltrate in the BALB/c footpad, in a serum cholesterol level dependent way. We conclude that statins contribute to macrophage-bactericidal activity against M. bovis, M. leprae and M. tuberculosis. It is likely that statins association with the actual multidrug therapy could effectively reduce mycobacteria viability and tissue lesion in Leprosy and Tuberculosis patients, although epidemiological studies are still needed for confirmation.

}, year = {2014}, journal = {Antimicrobial Agents and Chemotherapy}, issn = {1098-6596}, doi = {10.1128/AAC.01826-13}, language = {eng}, }